Hello,
I made this type of project by myself with completely running mode and coding and circuit by my self.
i.e. for car it deposite toll 30 Rs.
for truck / bus toll is 50 Rs.
very hevy vehicle toll is 100 Rs.
Its show these on LCD 16×2 with IC AT89S52 and EM – 18 RFID reader.
Complete project is ready with 2200 Rs. with 3 catagory vehicle..(mean 3 RFID card)
also I made project on 8051 so if you unterested in this just mail me or msg me if I can help you in this issue.
email : project[dot]student123[at]gmail[dot]com
or just google the DABHI ELECTRONICS and go to electronics project[dot]webs website..
Really it very very low cost..
Also if you want any support in h/w or s/w related of 8051 then you can ask me and also for buy any components at very very low cost.
Thanks
It may be helpful to you
Best Luck
Regards
Jaymin D